first of all Windows XP i stopt using it and moved on to Windows Server 2003 verry happy with it butt you have your XP installed on a fat32 patition verry usufull for old programs sometimes but for XP itself it has a tansion to get big problems.
... my advice to you is reinstall windows using NTFS partition
the DELL machine you`r working on it`s a pretty good one install XP on a 6GIG partition and music, games and movies on another partition i`m doing that for years now and works perfectly besides it`s prevents faster corruption of the ntfs partition to witch you wil have installed your Windows.
signt. Reaver